What to Document for a Custody Case: A Practical Checklist

Attorneys and mediators can only work with what you can show. Most parents heading into a custody case have plenty of memories and very little organized documentation, which means the first weeks are spent reconstructing history from screenshots and bank statements. This checklist covers what’s worth collecting from day one, so that if you ever need it, it’s already in order.

One caution before the list: your jurisdiction’s rules decide what’s ultimately usable. Treat this as preparation for a conversation with your attorney, not a substitute for one.

1. The formal documents

Keep clean copies of everything that defines the arrangement:

• Court orders and any modifications.
• The parenting plan or custody agreement.
• Child support orders and related paperwork.
• Anything in writing where you both agreed to a change, even informally.

These are the baseline. Every incident you document matters because it can be compared against what these papers say should happen.

2. Parenting time as it actually happens

The gap between the schedule on paper and reality is often the heart of a case. Record:

• Exchanges: on time, late, or missed, with dates, times, and who was present.
• Cancelled or cut-short visits, and the reason given.
• Denied phone or video calls that your plan schedules.
• Your own involvement: appointments you took your child to, school events you attended, days of care. Cases are about your engagement, not only the other parent’s lapses.

3. Incidents and concerns

Late exchanges, medical issues, safety concerns, things your child tells you that need remembering: these belong in a structured incident log with dates, facts, categories, and severity. This is the core of the record, and it has its own discipline. Our guide on documenting custody violations covers exactly what to capture and how to phrase it so it stays credible.

4. Communication records

• Keep scheduling conversations in writing where possible; messages make better records than phone calls.
• Screenshot significant messages promptly and attach them to the relevant incident, so they’re dated and in context.
• Note unilateral changes: plans altered without agreement, announcements instead of discussions.
• Stay civil in your own messages. Assume everything you write will be read aloud someday, because it might be.

5. Money

Shared costs are their own dispute engine, and their own kind of evidence. Track child-related expenses as they happen: amount, date, category, who paid, how it was split, receipt attached. Reimbursement requests and what happened to them belong here too. The full system is in our guide on tracking co-parenting expenses.

6. Photos and other evidence

• Photos that document a concern: condition at drop-off, missing winter clothing, an injury.
• Attach evidence to the entry it belongs to. A photo floating in your camera roll without context loses most of its value.
• Be careful with audio recordings and photographing other adults; the rules vary a lot by jurisdiction. Ask your attorney first.

Organize it so it can be used

The difference between documentation and a useful record is organization:

• One place. Incidents, expenses, and evidence together, not spread across five apps.
• Chronological and dated. Every entry carries the date it occurred and the date it was logged.
• Categorized. So you can answer “how often did this happen?” in seconds.
• Tamper-evident. If you correct an entry, the original should stay on record. A record that can prove it wasn’t rewritten is a record that survives challenge.
• Exportable. When asked, you should be able to hand over a clean, dated PDF in minutes.

What to leave out

Restraint is part of credibility. Skip the daily grievances, the commentary about your co-parent’s new partner, and anything that’s about the adult conflict rather than the child’s situation. A lean, factual record signals a parent focused on the child. An exhaustive one signals a parent focused on the fight.

Frequently asked questions